Hello, I have a .50 cal 42 inch swamped barrel that shoots bad to the right. IMO, I've had to make a pretty excessive adjustment to the sights which I 'll try to describe. Looking from the breech end up towards the muzzle I've had to move the rear sight notch a full 1/16 or more left of the centerline of the barrel. Also, to further compensate I've had to move the front sight to the right not quite a 1/16. Is this normal? Or should I have someone check out the barrel to see whats going on? I've shot around 600 PRB through the barrel. I don't think it's from any kind of shooter error, I've shot for 25 yrs. and know the techniques. It shoots this way from the bench and off hand. I also think I've done nothing to put wear on the crown as I use a muzzle guard on a stainless rod. What do you guy think.